How did you celebrate your second birthday? If you can’t recall then don’t worry, you’re not alone. In fact, psychologists at Emory University in Georgia, USA, say that only children under the age of seven have any chance of remembering.
There’s no known limit! If you ask a mnemonist or memory savant to learn a list of names they may remember thousands, tens of thousands or even hundreds of thousands with no trouble, just as they can learn lists of thousands of digits.
Yes, and in many ways. In one study, researchers found that people with more Facebook friends had more grey matter in several important brain regions, although this might be because people who start with larger brains attract more friends.
Probably, but not necessarily. Body language varies with age, sex and culture, but some features are more or less universal. Even blind people who have never watched anyone else doing it throw their arms in the air when victorious and cross their arms when defensive.
Scared of flowers? Then don’t let that fear show in front of children. Scientists have found that children can become scared of apparently harmless objects if they see adults react in a frightened way.
Motion sickness in general is caused when your inner ear and your eyes disagree about whether you’re moving. When you read in a car, your visual field stays still but your inner ear detects the twists and turns.
Natural selection has favoured individuals with the capacity to feel bored because they are more likely to discover or create things that improve their survival chances, or to look for a new partner and so spread their genes more widely.
No-one is sure why we yawn. We do know that yawning increases with levels of some of the brain’s neurotransmitters, including dopamine and serotonin, and decreases with levels of the opium-like endorphins.
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